Jabea f



(No Model.)

J. P. SHAWHAN.

HEAD LIGHT.

No. 396,241. Patented Jan. 15, 1889.

NITED STATES PATENT JABRA F. SHAWI'IA', OF DAYTON, OHIO, ASSIGNOR OFONE-Hall T() JAMES IV. CARPENTER, OF SAME PLACE.

HEAD-LIGHT.

SPECIFICATION forming part of Letters Patent No. 396,241,

dated January l5, 1889.

Application filed March 23, 1888. Serial No. 268,271. (No model.)

To all 1072/0772, t may concern:

Be it known that I, JABEA F. SHwnAN, a citizen of the United States, anda resident of Dayton, Montgomery county, Ohio, have invented certain newand useful Improvements in Head-Lights, of which the following' is aspecification.

My invention relates to head-lights for use on locomotives, steamboats,and the like; and it has t'or its object to improve the construction andarrangement of such head-lights so that they will be adapted for useeither in connection with the ordinary oil-lamp or with an electriclamp; and my invention consists, generally, ina head-light providedwithin the case with means whereby the oil-lamp may be used or wherebyan electric current may be generated and an electric lamp used tofurnish the illumination; and it further consists in the variousconstructions and arrangements o t' devices, substantially ashereinafter pointed out.

Referring' to the accompanying' drawings, Figure l is a side viewshowiircl a portion ot' a locomotive with the head-light in position andthe necessary steam-connections from the head-light to the locomotive.ifig'. L is a rear view of a head-light provided with my improvements,parts beine' cut away to show the arrangement of the devices in thelamp.

In electric head-lighting' it has been deemed advisable to provide meanswhereby the oillamp may be readily interchane'ed with the electric lamp,so that if either lamp should fail the other may be quickly and readilyadjusted for use. This idea has been proposed heretofore, and variousarrangements have been made whereby either of such lamps can be used inthe head-light, and while this accomplishes the obj ect desired to acertain extent it is very desirable that not only should the lampsthemselves be inclosed within the ordinary case ot' the head-light, butthat the generator furnishing' the current and themotor drivingv the`generator also be arranged within the case of thehead-light, and thislatter feature constitutes one ot' the important points of my presentinvention.

Referring' to the accompanying' drawings, l represents the ease of anordinary head-light,

such as is usually carried in front ot' a locomotive, and 2 is theordinary parabolic retlector ot' said lamp.

3 represents what is ordinarily termed the base-board ot' thehead-light` and this is usually arranged to slide in and out of thehead-light case, and as shown in the drawings itis provided with abeveled cdc'c, l, engaging' under the lips or inclnes 5, which hold itin posit-ion in the head-light case. Mounted upon this base-board is thereservoir ti of the ordinary oil-lamp, having' a burner, 7, the end ot'which projects through an opening', S, in the under side of theparabolic reflector, and is arranged so that the flame will be in thefocus of theretlector, Thisburm'fr-tip is also constructed so as tosupport an electrode` il, which will constitute the negative('lm-trodtif of the electric lamp when such lamp is used, and thiselectrode is arranged in such a manner as not to interli'ere with theuse ot' the oillamp to anyextent, and itmaybe constructed in a mannershown more particulz'u'ly in my application Serial No. Ltt, and it willbe understood that this oil-burner is intended to remain in its positionwith relation to the reiiector whether oil is used or whetherelectricity is used to furnish the illuminat ion. Also mounted uponthebase-board l is the electric generator itl, the engine or motor ll,tor driving said generator7 and an elrlrctric lamp, 12, supplied withelectricity from the generator, and these devices, while they .may beot' various specite constructions, are arranged in such a position onthe base-board that when the base-board is in place in the head-lightthey will occupy the space between the retlectol' and the sides orrcarot' the case of the head-light.

In the prcsentinstance I have ind icated an electric lamp havingl aregulat ing-magnet, 12), controlling' the feed ot the upper electrode,lt, which is carried on an arm, l 5, on a screwshatt, l t, and thepositive electrode l-t is shown extending' through an opening', lT, intho upper part ot the reflector, so that it will be in operativerelation to the negative electrode il.

lVliile any form of elect rie lamp suitable for the purpose may be used,I have illustrated in a general way the construction of a IGC) lampsubstantially such as is shown in my application Serial No. 268,207, inwhich the upper carbon has a positive feed, and, while any suitableconnections may be used, in the present instance I connect this feeddirectly with the motor ll by means of a flexible shaft, lS, operating aworm, 19, gearing with a crank-wheel, 20, which is arranged to rotatethe screw-shaft l0 in accordance with the variations in the current ofthe lamp and controlled by the regulating-magnet 13.

lVhile various means may be used to drive the generator, I haveindicated in the drawings a rotary steam-engine, which is connecteddirectly with the shaft 2l of the armature of the generator, and inorder to supply motive power for said engine I have shown a pipe, 23,extending through the frame of the head-light and under the casin g 2aof the boiler of the locomotive to the steam-dome or other suitableplace of connection with the boiler. An exhaust-pipe, 25, also extendsthrough the head-light casing and enters the smoke chest or drum of thelocomotive, so that steam can be exhausted directly therein in the usualway. rIhese pipes .may be connected with the motor by detachableconnections-as pipe couplings or unions indicated therein-so that bysimply unscrewing the connections the whole apparatus carried on thebase-board may be removed from the case of the head-light.

A suit-able valve may be arranged in any convenient position-as in thecab of the engine-so as to control the motor-fluid passing through thepipe 23.

The rear of the reflector is preferably mounted upon a standard, 2G,secured to the base-board, it being cut away in the drawings to betterillustrate the position of the oil-lamp.

It will be understood, of course, that I may make use of any suitablemotor or motive power for ruiming the generator, as the particular kindof motor used is not essential to my invention, the gist of this featureof which consists in mounting the motor, generator, and lamps upon thesame removable base-board.

From the above ihe principal object ofmy invention will be appreciated,and it will be seen that by my arrangement all the operative parts ofthe lamps, whetherthe oil-lamp or the electric lamp is used, and themotor and generator for operating them are not only mounted upon asingle base-board, so as to be readily removed from the head-light, butall these parts are fully protected from damage from the elements ordust or otherwise by the inclosing-case of the head-light, and alloutside electric connections and arrangements of motor and generatorenthe engine outside the head-light are avoided. Moreover, as most of thestand ard head-lights in use to-day are provided with a base-boardsimilar to that shown, my invention may be readily applied to oldhead-lights by simply arranging the parts or devices substantially asindicated and inserting them into the head-light case.

Another advantage resulting from this construction is found in the factthat the reflector and both the oil and the electric lamps being fixedto the same base-board, when once their position is adjusted they willoccupy the same relations to one another, and there is little or nopossibility of their getting disarranged.

From the above it will be seen that my invention is not limited to theuse of any specitic form or construction of lamp or accessories, as theymay be varied wit-hout departing from my invention by any one skilled inthe art.

Ihat I claim isl. The combination, with the case of a headlight, of anordinary oil-lai np, an electric lamp, a generator supplying current tosaid flamp, and a motor for operating the generator, the whole beinginclosed within the case of the head-light, substantially as described.

2. The combination, with the case of a headlight, of a base-board, thewhole being inclosed within the case of the head-light supporting anelectric lamp, a generator for said lamp also supported on thebase-board, and a' motor for driving said generator also mounted on saidbase-board, substantially as described.

3. In a head-light, a base-board having a standard supporting theparabolic reflector, an oil-lamp attached to said base-board, the burnerof which extends through the lower opening of said reflector, anelectric lamp supported on the base-board having one electrode extendingthrough the upper opening of the reiiector, a generator for said lamp,and a motor driving said generator, the whole being inclosed within thehead-light case, substantially as described.

et. The combination, with a locomotive-engine, of a head-light mountedthereon, an electric lamp, a generator therefor, a motor operating thegenerator, all being inclosed in the head-light, a pipe leading fromsaid headlight to the source of power on the locomotive, and anotherexhaust-pipe leading from said head-light to the smoke chest or drum ofthe locomotive, substantially as described.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

.TAREA F. SIIAWHAN.

Witnesses:

J. S. BARKER,

nino. H. GRAHAM.

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